The climate benefits of biofuels such as ethanol and biodiesel have been debated for many years. Attempts to compare these fuels with one another and fossil-derived fuels such as gasoline and diesel confront many uncertainties, not all of which can be resolved through further data analysis. By scrutinizing the greatest sources of uncertainty and grounding analysis in the areas of high certainty such as combustion chemistry and the terrestrial carbon cycle, this paper sheds light on this challenging subject and points the way toward new strategies for addressing CO2 emissions from transportation fuels.
Autonomous "robot" vehicles that can drive themselves hold great promise for transforming transportation systems across the world. Part of their appeal is the potential to greatly improve energy efficiency and reduce emissions. Not so fast, notes Bradley Berman in a critical piece on ReadWriteDrive, where he quotes Energy Institute research professor John DeCicco's admonition that technology "doesn't save us from ourselves."
More and more plug-in electric vehicles are hitting the roads each year, but is the technology really close to a tipping point for mass-market growth? In this analysis piece for the Society of Automotive Engineers (SAE), U-M Energy Institute research professor John DeCicco argues that the real turning point for EVs will come only after transportation systems are automated for driverless operation. Read the article here at Automotive Engineering International Online.
Carrie Morton, a member of the Energy Institute team since 2011, is leaving the Institute to join the University’s new Mobility Transformation Center (MTC) as Managing Director. The MTC is a public/private R&D partnership formed to develop the foundations of a commercially viable ecosystem of connected and automated vehicles that will dramatically improve transportation safety, sustainability, and accessibility. The Energy Institute is a partner supporter of the MTC.
Fuel economy must improve 57 percent in order for light-duty vehicles to match the current energy efficiency of commercial airline flights, says a University of Michigan researcher.
Michael Sivak, a research professor at the U-M Transportation Research Institute, examined recent trends in the amount of energy needed to transport a person a given distance in a light-duty vehicle (cars, SUVs, pickups and vans) or on a scheduled airline flight. His analysis measured BTU per person mile from 1970 to 2010.
Mcity is a partnership with industry, communities and government formed at U-M to transform global mobility by dramatically improving transportation safety, accessibility, efficiency and sustainability. Mcity draws on U-M’s broad strengths in engineering, urban planning, energy and information technologies, business, law and the social sciences to accelerate progress in diverse areas such as connected-vehicle systems, driverless vehicles, shared vehicle, and advanced propulsion systems.
Based on results from his recent study, the Energy Institute’s John DeCicco has authored an article for Yale’s Environment 360 blog. This thought-provoking piece opens:
Every U.S. president since Ronald Reagan has backed programs to develop alternative transportation fuels. But there are better ways to foster energy independence and reduce greenhouse gas emissions than using subsidies and mandates to promote politically favored fuels.